JP3173463B2 - Twisting false twisting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pre-twisting false twisting machine for false-twisting a yarn and heat-treating the false-twisted yarn to produce a stretched processed yarn.

[0002]

2. Description of the Related Art Conventionally, a yarn drawn from a yarn feeding bobbin of a double twister unit is twisted by a false twisting unit, and is arranged above the double twister unit and below the false twisting unit. 2. Description of the Related Art There is known a pretwisting false twisting machine in which a heat treatment is performed by a heater unit to produce a stretched textured yarn.

[0003]

In the conventional twisting false twisting machine described above, both the first feed roller and the second feed roller disposed with the false twisting unit interposed therebetween are formed of a yarn. Due to the nip type that does not slide in the feeding direction, the center of the package and both ends of the package are changed due to the change in the yarn tension caused by the change in the length of the yarn from the traverse fulcrum to the package. The hardness of the package differs between the part and the part. As described above, when a package having different hardnesses is dyed at the center and both ends of the package, the amount of dye solution penetrating into the package differs between the center and both ends of the package, so that uneven dyeing may occur. become.

[0004] Further, if the yarn feed amount of the second feed roller closer to the winding unit is increased to make the hardness of the package uniform, the yarn tension at both ends of the package decreases, and the package tension decreases. In other words, a so-called twill drop occurs in which the yarn drops from both ends of the tape.

[0005] It is an object of the present invention to solve the problems of the conventional twisting false twisting machine as described above and to provide a twisting false twisting machine which improves the quality of the processed yarn to be produced. It is in.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention firstly provides a first twist false twisting process comprising a double twister unit, a heater unit, a false twist unit, and a winding unit. A second feed roller downstream of the false twisting unit is configured to allow a yarn fed by the second feed roller to slide along a yarn feed direction of the second feed roller. Second, the second feed roller is constituted by a pair of feed roller constituent members arranged so that the protruding members mesh with each other, and thirdly, the upstream side of the heater unit. 1 is configured in a nip type.

[0007]

Embodiments of the present invention will be described below, but the present invention is not limited to these embodiments unless it departs from the gist of the present invention.

A double twister unit D is disposed below the machine base of the false twisting and twisting machine. The yarn y pulled out of the stationary yarn supply package d1 is rotated by the drive belt d2. Through a through hole d4 'drilled in a rotary cylinder d4 attached to a spindle d3, above the yarn feeding package d1 (upper of the double twister unit D).
Guide d5 and drop wire d arranged at
6 is passed. The yarn y twisted by the double twister unit D passes through a suitable cutter g1 provided above the balloon guide d5, and then forms a pair with a drive roller f1 provided above the cutter g1. The first feed roller F1 constituted by an endless belt f3 stretched between the rollers f2 is nipped and fed by the roller f1 and the endless belt f3. The drive roller f1 and the endless belt f3 nip the yarn y in a region having a predetermined angle on the peripheral surface of the drive roller f1. Thus, the first feed roller F
1 is on the yarn path downstream of the double twister unit D and upstream of a heater unit to be described later. Even if a large tension is applied to the yarn y pulled out from the first feed roller F1, the yarn y is completely nipped by the roller f1 and the endless belt f3, and is interposed between the yarn y and the roller f1 and the endless belt f3. It is configured so that no slippage occurs. The nip-type first feed roller F1 composed of the drive roller f1 and the endless belt f3 is provided with a yarn speed detector for measuring the number of twists.

H is a heater unit having a vertical yarn path h1. The heater unit H is located behind the double twister unit D (on the double twister unit D, at the back side of the first twist false twisting machine). Further, it is disposed at substantially the same height as the double twister unit D.

The yarn y sent out from the first feed roller F1 passes through a yarn guide g2 disposed behind the first feed roller F1 and passes through the double twister unit D.
And the gap formed between the heater unit H and
The yarn guide g, which is guided substantially vertically downward, and is then disposed on the yarn introduction side h2 of the heater unit H.
2 is guided by a thread guide g3 located below, and then
Behind the yarn guide g3 in the horizontal direction, the heater unit H
Through the yarn guide g4 disposed below the yarn introduction port h3 at the lower end of the heater unit H, it is inserted from below into the yarn path h1 of the heater unit H.

The yarn y coming out of the yarn outlet h4 at the upper end of the heater unit H is twisted by a false twisting unit T disposed upward along the yarn path h1 of the heater unit H. The yarn y coming out of the twisting unit T is distributed near the rear of the yarn guide g5 disposed above the false twisting unit T and the second feed roller F2 disposed above the first feed roller F1. The installed thread guide g
After passing through No. 6, it is sent out by the second feed roller F2. As described above, the second feed roller F2 is on the yarn path downstream of the false twisting unit T and upstream of the winding unit W. The processing yarn y ′ sent out by the second feed roller F2 is traversed in the winding unit W with the position of the second feed roller F2 as the traversing fulcrum, while being traversed by the traversing guide, the cradle arm w1. Supported by
It is wound around a package w3 that is rotationally driven by the friction roller w2. The above false twist unit T
Is disposed at a height between the first feed roller F1 and the second feed roller F2.

FIG. 1 shows a false twisting unit T in which the spinner t1 is rotated by two rotating rollers t2 arranged so as to sandwich the spinner t1. Various false-twisting units, such as a false-twisting unit that is twisted while being pinched by a pair of belts that travel by traveling, can be used.

Hereinafter, the second feed roller F2 as an example will be described with reference to FIGS.

F2 'is a pair of feed roller constituting members constituting the second feed roller F2. The feed roller constituting member F2' is composed of a disk f5 and a drive shaft f4 attached to the tip of the drive shaft f4. The surface of the disk f5 located on the opposite side to the surface
4 comprises a substantially hemispherical protruding member f6 attached at equal intervals along the outer periphery of No. 4. As shown in FIG. 3, such a feed roller component F2 ′ is
Disk f5 of one feed roller component F2 '
And the substantially hemispherical projection member f6 attached to the disk f5 of the other feed roller constituting member F2 'is arranged so as to mesh with each other, and the second feed member is disposed. The roller F2 is configured.

As shown in FIG. 3, the yarn y is formed along the valley portion formed by the projection member f6 arranged so as to mesh with the pair of feed roller constituting members F2 '. Is guided by the outer peripheral surface of. The drive shaft f4 of the pair of feed roller constituent members F2 ′ is
When rotated by a suitable driving source (not shown), the yarn y guided on the outer peripheral surface of the projection member f6 is fed in the rotation direction of the disk f5 to which the projection member f6 is attached. Have been. When the yarn y sent out from the second feed roller F2 is applied with an excessive tension of a predetermined value or more, the yarn y becomes a projecting member arranged so as to mesh with the pair of feed roller constituent members F2 ′. It is configured to slide on the outer peripheral surface of f6 along the yarn sending-out direction and absorb a predetermined or more excessive tension applied to the yarn sent by the second feed roller F2.

As described above, the second feed roller F
The second feed roller F2 can be made compact by configuring the pair 2 as a pair of feed roller constituent members F2 'arranged so that the protrusion members f6 mesh with each other.

As shown in FIG. 1, the pretwisting false twisting unit U including the double twister unit D, the heater unit H, the false twisting unit T and the winding unit W is arranged back to back. Along the longitudinal direction of the machine base, a large number of pretwisting false twisting machines are arranged and configured, and between the double twister units D of the false twisting units U arranged back to back,
The heater unit H is arranged at substantially the same height as the double twister unit D. The heater unit H has a yarn path h1 for heating the yarn y on one side of the false twisting unit U and the other yarn path h1. In order to heat the yarn y on the side of the false twisting unit U, a yarn path h1 'is arranged in parallel.

As described above, the yarn y pulled out from the yarn supply package d1 is sent out by the first feed roller F1 via the balloon guide d5 and the cutter g1, and is then arranged behind the first feed roller F1. After the gap formed between the double twister unit D and the heater unit H is guided substantially vertically downward by the provided thread guide g2 and the thread guide g3 located below the thread guide g2, , Through the yarn guide g4. Heater unit H
Is twisted by the false twisting unit T,
Thereafter, the cradle arm w is fed through the yarn guides g5 and g6 by the second feed roller F2.
1 and wound around a package w3 that is rotationally driven by a friction roller w2.

The above-described balloon guide d5 and cutter g
1, first feed roller F1, yarn guides g2, g3,
g4, false twist unit T, yarn guides g5, g5 and second
The feed roller F2 has a yarn path of the yarn y existing between the balloon guide d5 and the second feed roller F2.
They are arranged so as to be substantially in the same plane. Thus, the balloon guide d5 and the second feed roller F
By configuring the yarn path of the yarn y existing between the yarn paths 2 and 2 so as to be substantially in the same plane, it is possible to prevent the yarn path from becoming complicated and to make the adjacent false twisting unit U
The spacing between them can be reduced.

G7 is near the lower part of the false twisting unit T,
A yarn guide that is disposed close to the yarn path of the yarn y coming out of the heater unit H and heading to the false twisting unit T;
It is disposed at a position higher than the position of the yarn guide g2 disposed behind the first feed roller F1 described above.

The yarn y pulled out from the yarn supply package d1 of the double twister unit D is sent to the false twisting unit T
When the false twist is not performed without passing through the yarn, the yarn y coming out of the heater unit H is, as shown in the false twist processing unit U located on the right side in FIG. The second feed roller is fed by a second feed roller F2 through a thread guide g6 disposed near the rear of the second feed roller F2, and then passed through a yarn guide g6 disposed near the lower portion of the second feed roller F2. It is sent to a winding unit W arranged behind F2.

Further, the yarn y pulled out from the yarn supply package d1 of the double twister unit D does not pass through the false twisting unit T and the heater unit H, and the above-described first twisting false twisting machine is simply used as a double twister. When the yarn y is used as the first feed roller F, as shown by a dotted line in FIG.
The yarn y hung on the yarn guide g2 disposed behind the
Is hung on a yarn guide g7 disposed near the lower part of the false twisting unit T. Thereafter, the yarn y passes through the yarn guide g6 disposed near the rear of the second feed roller F2, and is then moved to the second position.
While being sent out by the feed roller F2, it is sent to a winding unit W disposed behind the second feed roller F2.

As described above, the heater unit H is
Behind the double twister unit D, and is arranged at substantially the same height as the double twister unit D, it is possible to reduce the height of the false twist false twisting machine,
Therefore, it is possible to reduce the installation space of the first twist false twisting machine and to improve the workability of various operations including the threading operation to the heater unit H.

Further, since the heater unit H is disposed at substantially the same height as the double twister unit D, the heater unit H is located between the heater unit H for cooling the yarn y coming out of the heater unit H and the false twist unit T. The cooling zone Z to be manufactured can be lengthened, and thus the quality of the processed yarn y ′ to be manufactured can be improved.

When the processing yarn y 'is wound around the package w3 while traversing by a traverse guide (not shown), the processing yarn y' from the traverse fulcrum to the package w3.
Is the shortest at the center of the package w3 and the longest at both ends of the package w3. Therefore, when the feeding amount of the processing yarn y ′ sent out by the second feed roller F2 is constant, the yarn tension applied to the processing yarn y ′ becomes
The size increases from the center of the package w3 to both ends of the package w3.

When the second feed roller F2 is a nip type constituted by a drive roller f1 and an endless belt f3 stretched between a pair of rollers f2 like the first feed roller F1 described above, , Processed yarn y '
Is completely nipped by the roller f1 and the endless belt f3, the tension applied to the processing yarn y 'traversed by the traverse guide (not shown) is applied from the center of the package w3 to both ends of the package w3. Thus, the package w3 is manufactured in which the center portion of the package w3 is soft and both ends of the package w3 are hard. As described above, when the package w3 having different hardnesses at the center and both ends of the package w3 is dyed, the amount of dye solution penetrating into the package w3 is different between the center and both ends of the package w3. Unevenness will occur.

Further, if the feeding amount of the processing yarn y 'by the nip type feed roller is increased in order to prevent the yarn tension at both ends of the package w3 from increasing, the yarn tension at both ends of the package w3 decreases. That is, a so-called twill drop occurs in which the processed yarn y 'falls from both ends of the package w3.

In this embodiment, when a larger tension is applied to the processing yarn y 'at both ends of the package w3 than at the center of the package w3, the processing yarn y' is moved to the second feed roller F2. The package w3 is configured to slide along the yarn feeding direction.
The excessive yarn tension of the processed yarn y ′ at both ends of the second feed roller F2 is absorbed by the second feed roller F2. Therefore, the hardness of the package w3 is substantially uniform at the center and both ends of the package w3, and therefore, it is possible to prevent the occurrence of uneven dyeing and bleeding.

The magnitude of the variation in tension between the central portion of the package w3 and the both ends of the package w3 is determined by twisting by the false twisting unit T.
In the case of the processed yarn y ′ having a large expansion and contraction set and manufactured by the method described above, since it is absorbed by the expansion and contraction of the processed yarn y ′ itself, it does not matter much. When used as a double twister, the stretch ratio of the processed yarn y ′ is small, and the yarn tension fluctuation is
It cannot be absorbed due to expansion and contraction of the processed yarn y 'itself. Therefore, in such a case, when excessive yarn tension is applied to the processing yarn y ', the processing yarn y'
By configuring the second feed roller F2 so as to slide along the yarn feeding direction, the package w
3 and the fluctuation of the tension between both ends of the package w3
Absorption due to slippage of the processing yarn y ′ in the second feed roller F2 can prevent the occurrence of uneven dyeing and twilling.

The first upstream side of the heater unit H
The yarn y sent out by the first feed roller F1 is fed to the first feed roller F1.
The nip type that does not slip along the yarn feed-out direction can prevent the twist twisted by the false twisting unit T from propagating in the direction of the double twister unit D. The twisting efficiency of the unit is improved.

In this embodiment, the double twister unit D for driving the spindle d3 by the drive belt d2 has been described. However, a single-twisted double twister unit provided with a drive motor for each spindle d3 may be used.

[0032]

Since the present invention is configured as described above, the following effects can be obtained.

The second feed roller downstream of the false twisting unit is configured to allow the yarn fed by the second feed roller to slide along the yarn feed direction of the second feed roller. In addition, it is possible to prevent twilling, and to make the hardness of the package uniform along the axial direction of the package, and thus to manufacture a package without uneven dyeing.

[0034] Since the second feed roller is constituted by a pair of feed roller constituting members arranged so that the protruding members mesh with each other, the second feed roller can be made compact.

Since the first feed roller on the upstream side of the heater unit is formed in a nip form, the twist twisted by the false twist unit can be prevented from propagating in the direction of the double twister unit. The twisting efficiency of the unit is improved.

[Brief description of the drawings]

FIG. 1 is a side view of a pretwisting false twisting machine of the present invention.

FIG. 2 is an exploded perspective view of a second feed roller as an example used in the pretwisting false twisting machine of the present invention.

FIG. 3 is a perspective view of a second feed roller as an example used in the pretwisting false twisting machine of the present invention.

[Explanation of symbols]

 D: Double twister unit F1: First feed roller F2: Second feed roller H: Heater unit T:・ Twisting unit W ・ ・ ・ ・ ・ ・ ・ Winding unit

Claims (3)

(57) [Claims] 1. A pre-twisting false twisting machine comprising a double twister unit, a heater unit, a false twisting unit, and a winding unit, wherein a second feed roller downstream of the false twisting unit is provided with a second feed roller. A first twist false twisting machine characterized in that a yarn fed by a roller is allowed to slide along a yarn feeding direction of a second feed roller. 2. The pre-twisting false twisting machine according to claim 1, wherein the second feed roller is constituted by a pair of feed roller constituting members arranged so that the projecting members mesh with each other. 3. The pre-twisting false twisting machine according to claim 1, wherein the first feed roller upstream of the heater unit has a nip type.